Keystone Management vs Sunnova
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Keystone Management
Manage your rental property account conveniently from your mobile device. Pay rent, submit maintenance requests, and review your account details anytime, anywhere.
- Pay rent
- Request maintenance
- Review account
- On-the-go access
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The Keystone Management Resident App allows your to pay your rent, request maintenance and review your account all while on the go!
Sunnova
Manage your home's energy ecosystem, including solar, storage, and electric vehicles, from a single app. Monitor performance, optimize energy usage, and gain insights into your home's energy consumption.
- Manage solar, storage, and EV devices
- View hourly, daily, and monthly performance
- Optimize home energy usage
- Monitor energy ecosystem
- Gain performance insights
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The Sunnova App puts homeowners in control of their home energy by combining modern energy appliances, including solar, storage, and electric vehicles, in one, convenient app. Users can manage their devices; view hourly, daily, and monthly performance; and discover new ways to optimize their home. As the central place for managing a new kind of home energy ecosystem, the Sunnova app enables homeowners to manage and optimize their Sunnova Adaptive Home™.
Screenshots
Verdict
The clearest difference is review sentiment: Keystone Management at 73% against Sunnova's 6%. Keystone Management also leads on rating (4.6 vs 3.9) and iOS requirement (12.0 vs 15.1). Sunnova's advantage is update cadence (every 3 weeks vs every 11 months) and ratings volume (860 vs 205). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Keystone Management holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 205 and 860 respectively. Written reviews point the same way: 73% of Keystone Management's written reviews are positive against 6% of Sunnova's.
Keystone Management ships an update every 11 months, Sunnova every 3 weeks. Both last shipped on November 3, 2026.
| Parameter | Keystone Management | Sunnova |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (205 ratings) — better | 3.9 (860 ratings) |
| Positive reviews | 72.7% of reviews — better | 6.3% of reviews |
| Number of ratings | 205 | 860 — better |
| Update frequency | Every 11 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 84 MB | 87 MB |
| Age rating | 4+ | 17+ |
| Developer | Yardi Systems, Inc. | Sunnova Energy |
Customer experience
Keystone Management
Sunnova
Bugs and requests
Keystone Management
Not enough reviews yet to summarise bugs or requests.
Sunnova
Reported bugs
3 issues- App freezes on startup
- Incorrect or missing production data
- Billing information not updating properly
Requested features
3 requests- Custom date range for production data
- Real-time energy usage and generation data
- Ability to view individual panel performance
In-app purchases
Keystone Management
No in-app purchases
Sunnova
No in-app purchases
Questions
Is Keystone Management free?
Is Sunnova free?
Which has better reviews, Keystone Management or Sunnova?
Do Keystone Management or Sunnova have ads?
Which is updated more often, Keystone Management or Sunnova?
Other comparisons
